一种高成品率并联反馈型介质稳频振荡器  

A High Yield Parallel-feedback Type DRO

作　　者：刘小利[1] 孙忠良[1] 

机构地区：[1]东南大学毫米波国家重点实验室

出　　处：《固体电子学研究与进展》1996年第4期393-397,共5页Research & Progress of SSE

基　　金：国家八五攻关项目

摘　　要：介绍了一种有广泛应用前景的并联反馈型介质稳频振荡器（ＤＲＯ）的电路原理和结构［７］。它采用平行线耦合结构，将相位调整和耦合大小的调整完全分开，易于实现和调整，从工程上基本解决了β值的选取和实现，因此提高了成品率。用此电路设计了工作频率为８．６ＧＨＺ的并联反馈型ＤＲＯ，其实验结果：在偏离载频１０ｋＨＺ处，相位噪声为－８４ｄＢｃ／Ｈｚ。In this paper,the principle and circuit of a parallel-feedback type DRO with great potential for application is recommended. In the circuit,a coupling structure with parallel microstrips is tised to separate completely the adjustment of phase from the adjustment of coupling coefficient. The problem of choosing and realizing of P value is practically solved,thtls,the yield of the oscillator is improved. By using the circuit, a parallel-feedback type DRO operating at 8. 6 GHz is designed. The result of the experiment shows that the phase noise is about-84 dBc/Hz at 10 kHz.

关 键 词：微波振荡器 低相位噪声 介质谐振器 

分 类 号：TN752.5[电子电信—电路与系统]